[linux-2.6-block.git] / drivers / target / target_core_rd.h

#ifndef TARGET_CORE_RD_H
#define TARGET_CORE_RD_H

#define RD_HBA_VERSION		"v4.0"
#define RD_MCP_VERSION		"4.0"

/* Largest piece of memory kmalloc can allocate */
#define RD_MAX_ALLOCATION_SIZE	65536
#define RD_DEVICE_QUEUE_DEPTH	32
#define RD_MAX_DEVICE_QUEUE_DEPTH 128
#define RD_BLOCKSIZE		512

/* Used in target_core_init_configfs() for virtual LUN 0 access */
int __init rd_module_init(void);
void rd_module_exit(void);

struct rd_dev_sg_table {
	u32		page_start_offset;
	u32		page_end_offset;
	u32		rd_sg_count;
	struct scatterlist *sg_table;
} ____cacheline_aligned;

#define RDF_HAS_PAGE_COUNT	0x01
#define RDF_NULLIO		0x02

struct rd_dev {
	struct se_device dev;
	u32		rd_flags;
	/* Unique Ramdisk Device ID in Ramdisk HBA */
	u32		rd_dev_id;
	/* Total page count for ramdisk device */
	u32		rd_page_count;
	/* Number of SG tables in sg_table_array */
	u32		sg_table_count;
	/* Number of SG tables in sg_prot_array */
	u32		sg_prot_count;
	/* Array of rd_dev_sg_table_t containing scatterlists */
	struct rd_dev_sg_table *sg_table_array;
	/* Array of rd_dev_sg_table containing protection scatterlists */
	struct rd_dev_sg_table *sg_prot_array;
	/* Ramdisk HBA device is connected to */
	struct rd_host *rd_host;
} ____cacheline_aligned;

struct rd_host {
	u32		rd_host_dev_id_count;
	u32		rd_host_id;		/* Unique Ramdisk Host ID */
} ____cacheline_aligned;

#endif /* TARGET_CORE_RD_H */
Commit	Line	Data
c66ac9db NB	1	#ifndef TARGET_CORE_RD_H
	2	#define TARGET_CORE_RD_H
	3
	4	#define RD_HBA_VERSION "v4.0"
c66ac9db NB	5	#define RD_MCP_VERSION "4.0"
	6
	7	/* Largest piece of memory kmalloc can allocate */
	8	#define RD_MAX_ALLOCATION_SIZE 65536
c66ac9db NB	9	#define RD_DEVICE_QUEUE_DEPTH 32
	10	#define RD_MAX_DEVICE_QUEUE_DEPTH 128
	11	#define RD_BLOCKSIZE 512
c66ac9db	12
c66ac9db NB	13	/* Used in target_core_init_configfs() for virtual LUN 0 access */
	14	int __init rd_module_init(void);
	15	void rd_module_exit(void);
	16
c66ac9db NB	17	struct rd_dev_sg_table {
	18	u32 page_start_offset;
	19	u32 page_end_offset;
	20	u32 rd_sg_count;
	21	struct scatterlist *sg_table;
	22	} ____cacheline_aligned;
	23
	24	#define RDF_HAS_PAGE_COUNT 0x01
52c07423	25	#define RDF_NULLIO 0x02
c66ac9db NB	26
c66ac9db NB	27	struct rd_dev {
0fd97ccf	28	struct se_device dev;
c66ac9db NB	29	u32 rd_flags;
	30	/* Unique Ramdisk Device ID in Ramdisk HBA */
	31	u32 rd_dev_id;
	32	/* Total page count for ramdisk device */
	33	u32 rd_page_count;
	34	/* Number of SG tables in sg_table_array */
	35	u32 sg_table_count;
d7e8eb5d NB	36	/* Number of SG tables in sg_prot_array */
d7e8eb5d NB	37	u32 sg_prot_count;
c66ac9db NB	38	/* Array of rd_dev_sg_table_t containing scatterlists */
c66ac9db NB	39	struct rd_dev_sg_table *sg_table_array;
d7e8eb5d NB	40	/* Array of rd_dev_sg_table containing protection scatterlists */
d7e8eb5d NB	41	struct rd_dev_sg_table *sg_prot_array;
c66ac9db NB	42	/* Ramdisk HBA device is connected to */
	43	struct rd_host *rd_host;
	44	} ____cacheline_aligned;
	45
	46	struct rd_host {
	47	u32 rd_host_dev_id_count;
	48	u32 rd_host_id; /* Unique Ramdisk Host ID */
	49	} ____cacheline_aligned;
	50
	51	#endif /* TARGET_CORE_RD_H */